Polarization Analyzer

Idealphotonics’ has designed a high-precision polarization analyzer for characterizing the polarization state of continuous-wave lasers. The analyzer is based on a rotating achromatic wave plate and a polarizer. The waveplate is rotated by a motor, while a photodiode (PD) collects one cycle of the signal. From this measurement, the four Stokes parameters (S0, S1, S2, S3) of the input light can be determined, enabling calculation of the polarization azimuth, ellipticity, and other related polarization parameters.